(1) In this section "daily rest period'' means a rest period referred to in section 11.

(2) Subject to subsection (3), an employee shall, in each period of 7 days, be granted a rest period of at least 24 consecutive hours; subject to subsections (4) and (6), the time at which that rest period commences shall be such that that period is immediately preceded by a daily rest period.

(3) An employer may, in lieu of granting to an employee in any period of 7 days the first-mentioned rest period in subsection (2), grant to him or her, in the next following period of 7 days, 2 rest periods each of which shall be a period of at least 24 consecutive hours and, subject to subsections (4) and (6) -

(a) if the rest periods so granted are consecutive, the time at which the first of those periods commences shall be such that that period is immediately preceded by a daily rest period, and

(b) if the rest periods so granted are not consecutive, the time at which each of those periods commences shall be such that each of them is immediately preceded by a daily rest period.